Get the GTP!
Used both had no probs with either...but i think the GTP is smoother..and its not Vet.
I believe the GTP is 200mg and the QV is 250mg...so i guess its up to you
But i would get the GTP their mg doses tend to be more accurate.
BUT the GTP Prop is killer like Radar said...200mg...umm ouch..I cut it with synthol or deca....